John Gill's Bible Commentary Ver. 9. But unto the sons of Kohath he gave none , etc.] Being all disposed of to the sons of Gershon and Merari: the reason of which follows, because the service of the sanctuary belonging unto them [was that] they should bear upon their shoulders ; as the ark with the mercy seat, and cherubim, the shewbread table, the candlestick, and the two altars; though in later times we find the ark was sometimes not only carried by the priests, but upon a cart, ( Joshua 3:17 4:10 2 Samuel 6:3).
Matthew Henry Commentary
Verses 1-9 - The offering of the princes to the service of the tabernacle was no made till it was fully set up. Necessary observances must always tak place of free-will offerings. The more any are advanced, the greate opportunity they have of serving God and their generation. No soone was the tabernacle set up, than provision is made for the removal of it. Even when but just settled in the world, we must be preparing for changes and removes, especially for the great change.
Original Hebrew ולבני1121 קהת6955 לא3808 נתן5414 כי3588 עבדת5656 הקדשׁ6944 עלהם5921 בכתף3802 ישׂאו׃5375